Cooking apparatus.



Q. & A. B. OLSTON. COOKING APPARATUS.

APPLIOATION FILED 00T. 7, 1908.

924, 1 85. Patented June s, 1909.

M7026: es.

yUNITED sTATEs PATENT oEEIoE.

OTTO OLSTON AND ALBEBT B. OLSTON, OF PORTLAND, OREGON.

cooKrNG APPARATUS.

A HN. 924,185.

Specification of Letters Patent.

Patented June 8, 1909.

To all whom it may concern: V

Beit known that we, OTTO OLs'roN and ALBERT B. OLsToN, both citizens of the United States, residing in the city of. Portland, county of Multnomah, and State of Oregon, (whose respective post-office addresses are 532 Goodnou h Building and 7 57 East Ankeny street, Port and, Oregon,) have invented certain new and useful Improvements in Cookin-g Apparatus, of which the following is a specification.

This invention'relates to cooking a paratus and more particularlyto that c ass .of cooking apparatus commonly known and designated as the iireless cooker, comprising a box or cabinet provided with one or more nests or chambers mto which can be placed receptaclescontaining food studs reviously heated to a'high degree and W ich are then allowed to cook by their own heat.

Among the salient objects of the inventionl are: to provide a cookin cabinet of the character' referred to in com ination with a hot water tank or boiler, and especially in com@ bination with that type of hot water tank or boiler used for domestic purposes, whereby the heat from the tank is utillzed to increase the efficiency of the cooker by raising the temperature thereof; to provide a cabinet of the character referred to which will not only provide one or'more cooking chambers, but at the same time inclose and lncr'ease the efliciency of the tank or boiler about which it is placed to provide a cabinet of the character- Figure 1 is aface or front elevation of one embodiment ofthe invention; Fig. 2 is a vertical sectional view taken on line A-A of Fig. 1; and Fi 3 is al horizontal sectional view taken on ine B-B of Fi 1. Referring Vto the drawings, 1 designates the cabinet proper, comprising inthe present embodiment a square casing adapted to be erected about a hot water tank or boiler 2,

-ready removal or adjustment.

vmetal lining 4.

constructed so as to be screwed together by means of screws, or where possible to be Joined together by means of hinges or other suitable fastenings which will permit of their The cabinet is divided or arranged into compartments or chambers. In the present showing the rear portion of the cabinet is constructed to receive and inclose the tank or boiler 2, while the front portion thereof vis divided intov four compartments, y3, 4, 5 and-6, each provided with a suitable door, as 'clearly shown in the drawings. The lcabinet is provided interiorly with a lining of heavy insulating or nonconducting material, such as asbestos, felt or other suitable non-conducting material, as indicated by 7. The purpose of this insulating material is to convert the compartments or chambers 3, 4 and 5 into heat-retaining cooking chambers into which can be placed receptacles containing food stuffs, as indicated by 8 and 9, which have been 1eviously heated to a high degree and t en placed within these insulated chambers and allowed to cook by their own heat, which is retainedwithin the chamber by reason of the i non-conductibility of the lining and the close fitting construction of the cabinet.

The tank or boiler 2 is wholly within and protected by the cabinet, and,` in the present showing of the'invention, is directly covered with the insulating material eXce t as to -those portions thereof intended to orm the v back Wall of the cooking chamber, orto be in direct contact with the back wall thereof,

hereinafter referred to.

Referring now to Fig. 2, the upper portion of the boiler is shown as formin for cooking chamber 3. Cham ers 4 and 5 are shown as provided with a thin sheet This sheet metal lining for the cooking chambers makes them absol10o a back wall lutely sanitary and prevents any possibility of the insulating or acking material becoming impregnated wit the vapors or spillings of the food stuffs being cooked. This lining vconstitutes the innermost surface ofthe cooking chamber vand is' made perfectly tight f so there is no 'communication between. the

interior of the chamber and the insulating material with which it is surrounded. The doors of the cooking chambers are also provided interiorl with a covering of the insulating materia and where the chamber itself is lined with the sheet metal lining, `the door is likewise provided with such a lining.

In order to secure the best results in sealing the cooking chambers from the outside atmosphere, the doors thereofl are made bevel-shape, as indicated at 10, so that when the doors are closed the interior of the cabinet is insulated from the outside and any heat which may be generated therein is prevented from escaping or radiating into the room.

The efiiciency of the tank or boiler 2 which is inclosed within this insulated cabinet and protected by the lining of non-conducting material, is very reatly increased. Owing to the fact that t e heat generated therein from the range or furnace with which it may be connected cannot radiate into the atmoshere, the water therein can be more readily eated and also be heated to a much higher degree than can be done when the boiler is eX osed and the heat therefrom allowed to ra iate into the room. It will be seen, therefore, that with the temperature of the tank and the water therein contained raised to or beyond the boilin point, the cooking chambers in contact t erewith will also be heated to the same degree by reason of the fact that both boiler and chamber are insulated from the outside atmosphere and are in communication with each other, and that when a receptacle of food stuff which has been previously heated to the boiling point is placed therein, its heat is not lessened by being absorbed by a cold nest or chamber, but on the contrary it is placed into a chamber or nest of a high temperature. It will therefore be understood that the insulating of the hot water tank or boiler very materially increases the efiiciency of the cooking chambers by raisin their temperature to a high degree, and a so that the efficiency of the tank or boiler as a hot Water roducer and retainer is also very materia y increased. In other words, by making it possible to heat the water in the tank to a higher degree by insulating it, also makes it possible to raise the temperature of the cooking chamber with which it is in communication, and thus increase the efiiciency as a cooking chamber.

There will be times when portions of the tank will not be heated, as for instance the lower portion thereof, and when it will be desired to insulate the tank at this point from the cooking chamber near it. For this pur ose there are provided removable back Wa s, as indicated at 11, in chamber 5, comprising a base or foundation piece provided u on the front thereof with a handle,` as s own, and upon the back thereof with a form made of the insulating material, constructed to fit snugly into the rear portion of the chamber, as indicated in Figs. 2 and 3. These back walls can be placed 1n all of the chambers as may be required. If the water in the tank iscold, then a back wall will be placed in the chamber which is going to bc used and `it becomes a cooking chamber similar to those now used and to be had in the market, comprising sim ly an insulated nest or chamber to receive t e heated receptacle, with no means of heating it before the receptacle is placed therein.

The lower part of the cabinet, designated as chamber 6, is shown as a closet or place into which to store things. Another chamber might be constructed at this point if desired to be used in the ordinary manner without regard to the boiler.

These cabinets are to be manufactured in regular sizes and adapted to be purchased in the market, according to the size of the tank, and placed upon the tank without any reconstruction. lf a man has a 40 gallon tank, a cabinet for that size of tank will be needed and can be readily put into place about his tank.

While We have described and illustrated but one embodiment of our invention, we are aware that modications and changes can be made therein without departing from the spirit of the invention and we do not, therefore, limit our invention to the particular embodiment here shown and described.

XVe claim:

1. The combination with a hot water tank or boiler, of a cabinet or chamber having insulating walls and adapted to inclose bodily said tank or boiler for the purpose of conserving the heat thereof, and provided interiorly with space adjacent said tank or boiler for receiving food stuffs which have been previously heated, whereby the temperature of said food stuffs can be conserved until wanted.

2. The combination with a hot water tank or boiler, of a cabinet or chamber having insulating walls and adapted to inclose bodily said tank or boiler for the purpose of conserving the heat thereof, and rovided inte riorly with one or more insu ated cooking chambers arranged exteriorly of but adjacent said tank or boiler, whereby the heat from said tank or boiler can be utilized for increasilpg the temperature of said cooking 'chamers.

3. As an article of manufacture, a cabinet provided with a boiler-receiving chamber to receive bodily a hot water tank or boiler, and with one or more insulated cooking chambers arranged within said cabinet exteriorly of but adjacent said boiler-receiving chamber, whereby anyincrease in the temperature of said boiler-receiving chamber can be utilized to increase the temperature of said cooking chambers.

4. As an article of manufacture, a-cabinet having a lining of insulatin material and having arranged therein a oiler-receiving chamber-or apartment constructed to receive bodily a hot Water tank or boiler for the purpose of conserving .the heat therein, and one or more independent cooking chambers With- `in said cabinet exteriorly of said boilerceiving chamber adapted to communicatev heat to said cooking chambers when heated, and a back-Wall adapted to be placed in said cooking chambers to insulate them from said boiler chamber When desired, substantially as described.

6. As an article of manufacture, a collapsible cabinet, having insulating Walls and having therein a boiler-receiving chamber or apartment for receiving bodily a hot Water tank or boiler, and one or more independent cooking chambers arranged exteriorly of said boiler-receiving chamber, but in such relationship thereto that the heat therein operates to increase the temperature of said vcooking chambers, for the purpose described.

- 7. In combination with a range boiler, a sectional cabinet adapted to be constructed about said boilerl and provided with a lining of insulating material whereby to conserve the heat within said boiler, and one or more cooking chambers also insulated from the outside atmosphere but in communication with said boiler in such a Way that the temperature of said boiler is utilized to increase l the temperature of said cooking chambers, substantially as and for the purposes described.

OTTO OLSTON. ALBERT B.OLSTON. Witnesses:

W. R. LITZENBERG, W. A. RoBBrNs. 

